00:00If you've got a question and you don't know where to go,
00:08Ask Nina for some help, cause she's got a science show.
00:11She makes sense of her senses while helping all her fans,
00:14By doing her experiments with potions that were banned.
00:17Touch her tongue, fingers, eyes, ears, ears, nose.
00:23Nina and the neurons find out what you need to know.
00:26Nina and the neurons find out what you need to know.
00:30If he helps us with our eyes and Felix with our touch,
00:33Ollie slips our snubbs and some bells she hears so much.
00:36But it's Ollie's brother, he helps us with our taste.
00:38Then he does the old neurons and they're coming to your place.
00:41Touch her tongue, fingers, eyes, ears, nose.
00:48Nina and the neurons find out what you need to know.
00:50Nina and the neurons find out what you need to know.
00:53Oh, yeah!
00:59Achoo!
01:00Oh, hello!
01:02I'm just giving my lovely crystal collection a bit of a dust,
01:06but it's been a while since I've done it,
01:07so the dust is making me sneeze.
01:09I hear a beep, I see a flash.
01:13I wonder what they're going to ask.
01:22Hi, Nina!
01:23Hi, guys!
01:25We've got a question for you.
01:27Why do we get sleepy dust in our eyes?
01:29What a good question!
01:31Why do we get sleepy dust in our eyes?
01:33Now, some people call it sleep in our eyes.
01:36It's those little hard bits that we sometimes get in the corner,
01:40just here.
01:41Why don't you all come down to the lab
01:42and we'll do some experiments to investigate.
01:45See you soon, Nina!
01:47Bye!
01:48Bye!
01:50Well, I'm going to need some help to answer this one
01:52and I know just who to ask.
01:54OK, neurons, time to get to work!
01:56Hmmmm...
01:59Hmmmm...
02:00Hmmmm...
02:01Hmmmm...
02:02Hmmmm...
02:03Hmmmm...
02:04Hmmmm...
02:05Hmmmm...
02:06Hmmmm...
02:07Hmmmm...
02:08Hmmmm...
02:09Hmmmm...
02:10Hmmmm...
02:11Hmmmm...
02:12Hmmmm...
02:13Neurons at the ready, Nina!
02:14OK, today's question is
02:17why do we get sleepy dust in our eyes?
02:20Now, which neuron do you think will be most useful
02:22in helping us find the answer?
02:24Me!
02:25Me!
02:26Me!
02:27Me!
02:29Will it be,
02:30Fabulous Felix?
02:31I can help so very much if you need the sense of touch.
02:34Will it be,
02:35Beautiful Belle?
02:36I send messages to Brain from Ear.
02:38If there is a sound, I'll help you hear.
02:40Will it be,
02:41Lovely Look?
02:42For look in and seein, day or night,
02:44I'll help you with your sense of sight!
02:46Will it be Awesome Ollie?
02:48If it's Pony or Whiffy, but you can't tell, my messages help your sense of snail.
02:53Or will it be Baby Bugs?
02:55Santa, Salty, Bitter or Sweet, I'm your taste buddy whenever you eat!
03:04It's Luke!
03:06Go Link! Go Link! Go Link! Go Link! Go Link! Go Link! Go Link!
03:14Luke! Cool Nina! I'll be looking out to help ya!
03:19Today's question is why do we get sleepy dust in our eyes?
03:22Now because sleepy dust is something we get in our eyes,
03:25Luke, our seeing neuron will be helping us today.
03:28But stand by neurons, I have a feeling I may be needing help from all of you.
03:32Right, I need to get the lab ready before the experimenters arrive.
03:36Daniel likes pizza. His twin brother Luke loves swimming.
03:43But they both want to know about sleepy dust.
03:46So today for one day only, Daniel and Luke become the experimenters!
03:52Hi guys!
03:56Hi Nina!
03:57Oh, welcome to my science lab! It's lovely to see you both!
04:01Now your question is why do we get sleepy dust in our eyes?
04:05But why do you want to know?
04:06Because I woke up this morning and I had sleepy dust in my eyes.
04:10Where did it come from?
04:11Well that's what we're going to try and find out.
04:14Because I get sleepy dust in my eyes too.
04:16And it does seem to be when I wake up in the morning.
04:19Oh, well let's just check.
04:21Okay, let's see if anyone's got any sleepy dust at the moment.
04:24So why don't you have a little feel?
04:27Nope, there's nothing there at all Nina.
04:29Your eyes are sleepy dust free.
04:32You're right Felix, I can't feel any sleepy dust.
04:35What about you guys?
04:36No, Nina!
04:37No, okay, so we only get sleepy dust when we wake up after a big sleep.
04:42And we can tell it's there because we can feel it.
04:44So I think we need to do some investigating to find out more.
04:47And for our first experiment we're going to be using our senses.
04:51Whoop whoop! A senses experiment!
04:54We're ready Nina!
04:56Okay, so here we have some jam, some mashed potato and some sand.
05:02So let's see if any of these feel like sleepy dust.
05:05Well, let's get our fingers in.
05:10Oh, does it feel like sleepy dust?
05:12No.
05:13No? It's a bit gooey isn't it?
05:18So what does the mashed potato feel like?
05:20Slippery and squeaky.
05:24So what does the sand feel like?
05:26Quite hard, it's crunchy.
05:29So do you think this feels like sleepy dust?
05:31Yeah.
05:32Yeah, the little hard grains of sand feel a bit like sleepy dust.
05:37But how does it get in our eyes?
05:39Oh, I know another experiment and it might help us find out more.
05:43Now what do you normally do with your eyes?
05:47See? Blink.
05:48Yeah, but there's something else you do with your eyes when you're very sad.
05:55Cry!
05:57Yes, you cry.
05:59And when you cry tears come from your eyes.
06:02Now what do tears look like?
06:04Water.
06:05Yes.
06:06Would you see these beakers look like they're filled with water?
06:08Yes.
06:09Well, some are water and some are a clear chemical.
06:13So we need to put our safety goggles on.
06:15And I'm wearing protective gloves as well as I'll be handling the chemicals.
06:19Nina's been specially trained to do this.
06:21You should never try mixing things yourself at home.
06:25Okay.
06:26Can you see that?
06:31Something very strange is happening.
06:35It's got all thick.
06:37Thick and gloopy.
06:39That's amazing.
06:41Ooh.
06:42Okay, next up.
06:48Wow.
06:50That's brilliant.
06:51It's changing colour.
06:53Whoa.
06:54That's definitely not like any water I've seen, Nina.
06:57That's because it's not water, Luke.
07:00This experiment has shown that just because some things are clear and look like water,
07:05doesn't mean they are.
07:06And that's just like tears.
07:08They look like water, but they have special salts in them to help keep our eyes clean.
07:13And to find out even more about sleepy dust, we need to find out lots more about tears.
07:19Chop an onion.
07:20Then there'll be lots of tears.
07:22We don't need to do that, bud.
07:24We just have to find somewhere really, really muddy.
07:27Ha ha.
07:28Let's go.
07:29Goggles off.
07:37Hmm.
07:38Where do you think we're going today?
07:40Nina said we were going somewhere muddy.
07:43And muddy means messy.
07:46Hey, guys.
07:47Looks like we're here.
07:49Here we are.
07:52Have you guessed why we're here yet?
07:54No, Nina.
07:55Well, why don't we take a drive to find out?
07:58Come on.
07:59Let's get in and don't forget to buckle up.
08:01Hmm.
08:02Hmm.
08:03Hmm.
08:04Hmm.
08:05Hmm.
08:06It's a bit noisy.
08:25It's a bit noisy and a bit bouncy and very messy too. Look at that wind stream.
08:39Oh, it's getting hard to see. There's so much mud. What do you think we could use to clean
08:48it off?
08:49Water.
08:50Great idea.
08:51We just squirt some water and put the wipers on. Well, the water and wipers are certainly
09:07doing the trick.
09:08That was brilliant, wasn't it?
09:11Yeah!
09:12And our eyes are a bit like a windscreen. There are lots of little things that float in the
09:17air that can get in our eyes like dust. So all day long, our eyes make wet tears. And
09:23when we blink, we wipe the tears across our eyes and wash the dirt away, just like the
09:28windscreen wipers. But what do tears have to do with sleepy dust?
09:33We don't know, Nina.
09:35Well, let's go back to the lab to do a final experiment. Maybe that'll help us see more
09:40clearly. Follow me.
09:44So your question was, why do we get sleepy dust in our eyes? And so far we've discovered
09:50that although tears are clear, just like water, they have special salts in them, which clean
09:55our eyes. And we've also learned that our eyes make tears all day long, which wipe across
10:00our eyes when we blink and keep them clean. But now we need to find out where sleepy dust
10:05comes from. So let's get experimenting!
10:08Yay!
10:09Okay, now for this experiment, we're going to make something that's a bit like sleepy dust.
10:14And to do that, we're going to use another type of salt called Ipsom salt. So let's take
10:19our Ipsom salts and pour them into the warm water. And using our stirrer, give it a good stir.
10:31Very good. Now let's take our droppers and we'll put a little bit of this liquid onto our
10:37black paper here. Okay, now let's use our fingers and spread the liquid out. Well done, guys.
10:48Now something amazing will happen. Can you see what's happening?
10:55It's turning into something. It's white.
10:58Yeah, it looks a bit white. It looks a bit like snowflakes, Nina.
11:03Oh, it does a bit, Luke. But these are actually called crystals. Now let's use our magnifying glass
11:09and have a closer look.
11:11Oh, they look like little sparkles. They look like twinkly stars.
11:20Yeah. Now these crystals here, these have had longer to form and dry out and have scraped some of the crystals off.
11:30Now what do they feel like?
11:32Oh, goody. My turn.
11:35Crunchy?
11:37Spiky?
11:39Yeah, it's quite crunchy and crispy. Just like sleepy dust.
11:45So your question was why do we get sleepy dust in our eyes? And I think we've answered it.
11:55We discovered that our eyes make tears all the time. And as we blink, we wipe the tears over our eyes and this keeps our eyes clean during the day.
12:04But when we're sleeping at night, we don't blink. So the tears gather in the corners where they dry out and leave behind the special cleaning salts that are in our tears.
12:15And that's why sometimes there's sleepy dust or sleep in our eyes when we wake up.
12:20Oh, so I hope that's answered your question.
12:23Thanks, Nina. Bye.
12:25Oh, you're welcome. Bye.
12:32If you want to know more about the science that's all around us, go to the Nina section on the CBB's website. Have fun.
12:42Lab coat on, Nina. Lab coat on, Ollie.
12:45Safety gloves on, Nina. Safety gloves on, Felix.
12:49And don't forget your goggles, Nina. Goggles are on, Luke.
12:53I think we're ready.
12:57We do experiments in the lab.
12:59In the lab.
13:00In the lab.
13:01In the lab.
13:02In the lab.
13:03Bobbling experiments in the lab.
13:05In the lab.
13:06Go, Nina.
13:07In the lab.
13:08In the lab.
13:09We say they're popping steam and smoke.
13:12We need protection, don't we, folks?
13:15We always put our safety first.
13:19Shoo-bee-doo-bee-doo-bee-doo-bee.
13:21We do experiments in the lab.
13:23In the lab.
13:24Go, Nina.
13:26It's been a marvellous day.
13:28The sand really did feel like sleepy dust.
13:31I really enjoyed myself today.
13:33The smells coming from Nina's beakers were really wiffy.
13:37I've had a bobby day.
13:39Especially when the windscreen got really muddy and messy and Nina had to clean it with the wipers.
13:46Ah, it's been such a great day, man.
13:50Those crystals looked amazing.
13:52Our day's been bursting with sensational experiments.
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